5.1.1面向与背、向形 Facing: younger direction a Facing of normal sedimentary sequence is upward Antiform-Anticline, Synform-Syncline5.1.1 面向与背、向形 ¾ Facing: younger direction „ Facing of normal sedimentary sequence is upward ¾ Antiform-Anticline; Synform-Syncline